TCP Global Professional Air Filter, Regulator and Lubricator Control Unit (1/4" NPT) Lengthen your Air Tools Lifetime and Improve their Performance! Use this Two Part Control Unit for Accurate Air Regulation and Filtered Moisture-Free Airflow Excellent for connecting to an air compressor or air hose and can also be wall mounted. egulator with Gauge: Provides precise adjustment of airflow operating air pressure up to 150 PSI Water Moisture Trap Filter: Removes solid particles and condensation